| Acronym | Meaning |
 | IFF | Identification |
| SPEED | Subsistence Preparation By Electronic Energy Diffusion (early Military Microwave Oven) |
| POT | Plane Of Tranquility |
| PA | Panama (ISO 3166 Digram) - Paraguay (FIPS 10-4 Country Code) -Partial Agonist -Pennsylvania (postal Symbol) - Petampere -PolyAmide (Nylon) - Prince Albert Piercing - Public Address (vocal Amplification System) - Public Affairs |
| E? OR E3 | Many |
| MDM | Michigan Dartmouth MIT Telescope Consortium |
| NAEC | U.S. Naval Air Engineering Center |
| SEG | Society Of Exploration Geophysicists |
| GP | General Practitioner - General Purpose - Grand Prix -Guadeloupe (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| GIB | Gibraltar (ISO 3166 Trigram) |
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